'\" te
.\" Copyright (c) 2001, Sun Microsystems, Inc.
.\" The contents of this file are subject to the terms of the Common Development and Distribution License (the "License").  You may not use this file except in compliance with the License.
.\" You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE or http://www.opensolaris.org/os/licensing.  See the License for the specific language governing permissions and limitations under the License.
.\" When distributing Covered Code, include this CDDL HEADER in each file and include the License file at usr/src/OPENSOLARIS.LICENSE.  If applicable, add the following below this CDDL HEADER, with the fields enclosed by brackets "[]" replaced with your own identifying information: Portions Copyright [yyyy] [name of copyright owner]
.TH ACLCHECK 3SEC "Dec 10, 2001"
.SH NAME
aclcheck \- check the validity of an ACL
.SH SYNOPSIS
.nf
\fBcc\fR [ \fIflag\fR... ] \fIfile\fR... \fB-lsec\fR [ \fIlibrary\fR... ]
#include <sys/acl.h>

\fBint\fR \fBaclcheck\fR(\fBaclent_t *\fR\fIaclbufp\fR, \fBint\fR \fInentries\fR, \fBint *\fR\fIwhich\fR);
.fi

.SH DESCRIPTION
The \fBaclcheck()\fR function checks the validity of an \fBACL\fR pointed to by
\fIaclbufp.\fR The \fInentries\fR argument is the number of entries contained
in the buffer. The \fIwhich\fR parameter returns the index of the first entry
that is invalid.
.sp
.LP
The function verifies that an \fBACL\fR pointed to by \fIaclbufp\fR is valid
according to the following rules:
.RS +4
.TP
.ie t \(bu
.el o
There must be exactly one \fBGROUP_OBJ\fR \fBACL\fR entry.
.RE
.RS +4
.TP
.ie t \(bu
.el o
There must be exactly one \fBUSER_OBJ\fR \fBACL\fR entry.
.RE
.RS +4
.TP
.ie t \(bu
.el o
There must be exactly one \fBOTHER_OBJ\fR \fBACL\fR entry.
.RE
.RS +4
.TP
.ie t \(bu
.el o
If there are any \fBGROUP\fR \fBACL\fR entries, then the group \fBID\fR in each
group \fBACL\fR entry must be unique.
.RE
.RS +4
.TP
.ie t \(bu
.el o
If there are any \fBUSER\fR \fBACL\fR entries, then the user \fBID\fR in each
user \fBACL\fR entry must be unique.
.RE
.RS +4
.TP
.ie t \(bu
.el o
If there are any \fBGROUP\fR or \fBUSER\fR \fBACL\fR entries, then there must
be exactly one \fBCLASS_OBJ\fR (\fBACL\fR mask) entry.
.RE
.RS +4
.TP
.ie t \(bu
.el o
If there are any default \fBACL\fR entries, then the following apply:
.RS +4
.TP
.ie t \(bu
.el o
There must be exactly one default \fBGROUP_OBJ\fR \fBACL\fR entry.
.RE
.RS +4
.TP
.ie t \(bu
.el o
There must be exactly one default \fBOTHER_OBJ\fR \fBACL\fR entry.
.RE
.RS +4
.TP
.ie t \(bu
.el o
There must be exactly one default \fBUSER_OBJ\fR \fBACL\fR entry.
.RE
.RS +4
.TP
.ie t \(bu
.el o
If there are any \fBDEF_GROUP\fR entries, then the group \fBID\fR in each
\fBDEF_GROUP\fR \fBACL\fR entry must be unique.
.RE
.RS +4
.TP
.ie t \(bu
.el o
If there are any \fBDEF_USER\fR entries, then the user \fBID\fR in each
\fBDEF_USER\fR \fBACL\fR entry must be unique.
.RE
.RS +4
.TP
.ie t \(bu
.el o
If there are any \fBDEF_GROUP\fR or \fBDEF_USER\fR entries, then there must be
exactly one \fBDEF_CLASS_OBJ\fR (default \fBACL\fR mask) entry.
.RE
.RE
.RS +4
.TP
.ie t \(bu
.el o
If any of the above rules are violated, then the function fails with
\fBerrno\fR set to \fBEINVAL\fR.
.RE
.SH RETURN VALUES
If the \fBACL\fR is valid, \fBaclcheck()\fR will return \fB0\fR. Otherwise
\fBerrno\fR is set to \fBEINVAL\fR and \fBaclcheck()\fR will return one of the
following:
.sp
.ne 2
.na
\fB\fBGRP_ERROR\fR\fR
.ad
.RS 19n
There is more than one \fBGROUP_OBJ\fR or \fBDEF_GROUP_OBJ\fR \fBACL\fR entry.
.RE

.sp
.ne 2
.na
\fB\fBUSER_ERROR\fR\fR
.ad
.RS 19n
There is more than one \fBUSER_OBJ\fR or \fBDEF_USER_OBJ\fR \fBACL\fR entry.
.RE

.sp
.ne 2
.na
\fB\fBCLASS_ERROR\fR\fR
.ad
.RS 19n
There is more than one \fBCLASS_OBJ\fR (\fBACL\fR mask) or \fBDEF_CLASS_OBJ\fR
(default \fBACL\fR mask) entry.
.RE

.sp
.ne 2
.na
\fB\fBOTHER_ERROR\fR\fR
.ad
.RS 19n
There is more than one \fBOTHER_OBJ\fR or \fBDEF_OTHER_OBJ\fR \fBACL\fR entry.
.RE

.sp
.ne 2
.na
\fB\fBDUPLICATE_ERROR\fR\fR
.ad
.RS 19n
Duplicate entries of \fBUSER\fR, \fBGROUP\fR, \fBDEF_USER\fR, or
\fBDEF_GROUP\fR.
.RE

.sp
.ne 2
.na
\fB\fBENTRY_ERROR\fR\fR
.ad
.RS 19n
The entry type is invalid.
.RE

.sp
.ne 2
.na
\fB\fBMISS_ERROR\fR\fR
.ad
.RS 19n
Missing an entry. The \fIwhich\fR parameter returns \fB\(mi1\fR in this case.
.RE

.sp
.ne 2
.na
\fB\fBMEM_ERROR\fR\fR
.ad
.RS 19n
The system cannot allocate any memory. The \fBwhich\fR parameter returns
\fB\(mi1\fR in this case.
.RE

.SH ATTRIBUTES
See \fBattributes\fR(7) for descriptions of the following attributes:
.sp

.sp
.TS
box;
c | c
l | l .
ATTRIBUTE TYPE	ATTRIBUTE VALUE
_
Interface Stability	Evolving
_
MT-Level	Unsafe
.TE

.SH SEE ALSO
.BR acl (2),
.BR aclsort (3SEC),
.BR attributes (7)
